12720270 has 32 divisors (see below), whose sum is σ = 31583520. Its totient is φ = 3274880.

The previous prime is 12720247. The next prime is 12720271. The reversal of 12720270 is 7202721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12720271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6441 + ... + 8180.

It is an arithmetic number, because the mean of its divisors is an integer number (986985).

Almost surely, 2^12720270 is an apocalyptic number.

12720270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12720270 is an abundant number, since it is smaller than the sum of its proper divisors (18863250).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12720270 is a wasteful number, since it uses less digits than its factorization.

12720270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14660.

The product of its (nonzero) digits is 392, while the sum is 21.

The square root of 12720270 is about 3566.5487519449. The cubic root of 12720270 is about 233.4347155807.

Adding to 12720270 its reverse (7202721), we get a palindrome (19922991).

The spelling of 12720270 in words is "twelve million, seven hundred twenty thousand, two hundred seventy".